Jonathan looked down to Mary as she writhed on the bed, and the corners of his lizard maw curled up into a smile. He leaned on the bed close to Mary and crammed the contents of the vial into her mouth.
Mary groaned as she felt herself undergo some changes.
She looked down as she watched a fully functional reptilian grow out from its sheath.
Mary checked and was relieved that she was still female as well.
Speaking of which, her breasts shrunk down from DD to CC you were a bit disappointed.
She grew larger and more muscled and grew to 7'8" and gaining 100lb of muscles.
While you felt your tail growing longer and stronger, you looked at Jonathan as he looked worried as hell.
A smile broke out onto your mouth as you went to the box of vials, replacing the male one and _______.